What Field Involves Derivatives and Integrals with Respect to Vectors?

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Discussion Overview

The discussion revolves around the concept of vector calculus, particularly in the context of its application in probability and machine learning as presented in a specific textbook. Participants explore the definitions and properties associated with derivatives and integrals with respect to vectors, questioning the scope and terminology used in different contexts.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant, Patrick, notes a distinction between traditional vector calculus and the vector calculus presented in a probability textbook, highlighting the use of derivatives and integrals with respect to vectors.
  • Another participant suggests that this is indeed "vector calculus" as it should be, and recommends a textbook for further reading.
  • Patrick inquires whether the concepts of Curl, Gradient, and Divergence are also part of vector calculus, expressing difficulty in finding definitions related to integrals with respect to vectors.
  • A later reply confirms that Curl, Gradient, and Divergence are indeed part of vector calculus.

Areas of Agreement / Disagreement

There is a general agreement that Curl, Gradient, and Divergence are components of vector calculus. However, the discussion reflects uncertainty regarding the broader definitions and applications of vector calculus, particularly in relation to the specific context of the textbook mentioned.

Contextual Notes

Participants express confusion over the definitions and applications of integrals with respect to vectors, indicating a potential gap in understanding or differing interpretations of vector calculus across different fields.

CuppoJava
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Hi,
I'm reading through a probability textbook right now (Pattern Recognition and Machine Learning by Bishop) and it makes heavy use of "vector calculus".

"Vector Calculus" is in quotations, because it's unlike the vector calculus that I learned in my courses (gradients, curls, divergence, etc...).

There's lots of formulas where he literally takes the derivative of a function with respect to a vector. Or he integrates a formula with respect to a vector.

What field of mathematics is this? And are there any good books where can I learn more about it?

Thanks
-Patrick
 
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Sounds exactly like "vector calculus", the way it should be. For a good textbook see http://www.chapters.indigo.ca/books/Vector-Calculus-Jerrold-E-Marsden/9780716749929-item.html?ref=Search+Books:+%2527vector+calculus%2527
 
Thank you for your help, I'm on my way to the library right now to get a copy of it.

As an aside then, are the Curl, Gradient, and Divergence properties also part of vector calculus? I scoured the internet for hours looking for the definition of an integral with respect to a vector, but the only results I came up with concerning "vector calculus" was regarding those three operators and their properties.
 
CuppoJava said:
Thank you for your help, I'm on my way to the library right now to get a copy of it.

As an aside then, are the Curl, Gradient, and Divergence properties also part of vector calculus? I scoured the internet for hours looking for the definition of an integral with respect to a vector, but the only results I came up with concerning "vector calculus" was regarding those three operators and their properties.

yup, they are.
 

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